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fn.c
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C/C++ Source or Header
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1992-11-29
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3KB
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133 lines
#include "all.h"
/*------------------------------------------------------------------*/
/* Find the function callped *cp, and return it's number */
/*------------------------------------------------------------------*/
/* You can add a function, you MUST place it in alphabetical order */
/* and give it the next unused index number */
/* ret = Type of returned value, 1=number, 2=string */
/* np = number of paramters expected */
/* Parameters p0...p4 == 1=number, 2=string, 0=none (e.g. height()) . */
#define NKEYS (sizeof keywfn / sizeof(struct keyw))
struct keyw { char *word; int index; int ret,np,p[5]; } keywfn[] = {
" ",0 ,1 ,0 ,0,0,0,0,0
,"+",1 ,1 ,0 ,0,0,0,0,0
,"-",2 ,1 ,0 ,0,0,0,0,0
,"ABS",3 ,1 ,1 ,1,0,0,0,0
,"ACOS",53 ,1 ,1 ,1,0,0,0,0
,"ASIN",54 ,1 ,1 ,1,0,0,0,0
,"ATN",4 ,1 ,1 ,1,0,0,0,0
,"CHR$",52 ,2 ,1 ,1,0,0,0,0
,"COS",5 ,1 ,1 ,1,0,0,0,0
,"CVTCOLOR",49 ,1 ,1 ,2,0,0,0,0
,"CVTFONT",50 ,1 ,1 ,2,0,0,0,0
,"CVTGREY",45 ,1 ,1 ,1,0,0,0,0
,"CVTINT",46 ,1 ,1 ,1,0,0,0,0
,"CVTMARKER",48 ,1 ,1 ,2,0,0,0,0
,"CVTRGB",47 ,1 ,3 ,1,1,1,0,0
,"DATE$",6 ,2 ,0 ,0,0,0,0,0
,"DEVICE$",51 ,2 ,0 ,0,0,0,0,0
,"EOF",55 ,1 ,1 ,1,0,0,0,0
,"EXP",7 ,1 ,1 ,1,0,0,0,0
,"FEOF",55 ,1 ,1 ,1,0,0,0,0
,"FIX",8 ,1 ,1 ,1,0,0,0,0
,"HEIGHT",9 ,1 ,1 ,0,0,0,0,0
,"INT",10 ,1 ,1 ,1,0,0,0,0
,"LEFT$",11 ,2 ,2 ,2,1,0,0,0
,"LEN",12 ,1 ,1 ,2,0,0,0,0
,"LOG",13 ,1 ,1 ,1,0,0,0,0
,"LOG10",14 ,1 ,1 ,1,0,0,0,0
,"NOT",15 ,1 ,1 ,1,0,0,0,0
,"NUM$",16 ,2 ,1 ,1,0,0,0,0
,"NUM1$",17 ,2 ,1 ,1,0,0,0,0
,"PAGEHEIGHT",18,1 ,1 ,0,0,0,0,0
,"PAGEWIDTH",19 ,1 ,1 ,0,0,0,0,0
,"POS",20 ,1 ,3 ,2,2,1,0,0
,"RIGHT$",21 ,2 ,2 ,2,1,0,0,0
,"RND",22 ,1 ,1 ,1,0,0,0,0
,"SEG$",23 ,2 ,3 ,2,1,1,0,0
,"SGN",24 ,1 ,1 ,1,0,0,0,0
,"SIN",25 ,1 ,1 ,1,0,0,0,0
,"SQR",26 ,1 ,1 ,1,0,0,0,0
,"SQRT",27 ,1 ,1 ,1,0,0,0,0
,"TAN",28 ,1 ,1 ,1,0,0,0,0
,"TDEPTH",29 ,1 ,1 ,2,0,0,0,0
,"THEIGHT",30 ,1 ,1 ,2,0,0,0,0
,"TIME$",31 ,2 ,0 ,0,0,0,0,0
,"TWIDTH",32 ,1 ,1 ,2,0,0,0,0
,"VAL",33 ,1 ,1 ,2,0,0,0,0
,"WIDTH",34 ,1 ,1 ,0,0,0,0,0
,"XEND",35 ,1 ,1 ,0,0,0,0,0
,"XG",36 ,1 ,1 ,1,0,0,0,0
,"XGRAPH",36 ,1 ,1 ,1,0,0,0,0
,"XMAX",37 ,1 ,1 ,0,0,0,0,0
,"XMIN",38 ,1 ,1 ,0,0,0,0,0
,"XPOS",39 ,1 ,1 ,0,0,0,0,0
,"YEND",40 ,1 ,1 ,0,0,0,0,0
,"YG",41 ,1 ,1 ,1,0,0,0,0
,"YGRAPH",41 ,1 ,1 ,1,0,0,0,0
,"YMAX",42 ,1 ,1 ,0,0,0,0,0
,"YMIN",43 ,1 ,1 ,0,0,0,0,0
,"YPOS",44 ,1 ,1 ,0,0,0,0,0
} ;
int binsearch(char *word, struct keyw tab[], int n);
find_un(char *cp, int *idx,int *ret,int *np,int **plist)
{
int i;
i = binsearch(cp,keywfn,NKEYS);
*idx = keywfn[i].index;
*ret = keywfn[i].ret;
*np = keywfn[i].np;
*plist = &keywfn[i].p[0];
}
/*------------------------------------------------------------------*/
/* Simple binary search */
/*------------------------------------------------------------------*/
binsearch(char *word, struct keyw tab[], int n)
{
int cond,low,high,mid;
low = 0;
high = n-1;
while (low <= high) {
mid = (low+high) / 2;
if ((cond = strcmp(word,tab[mid].word)) < 0)
high = mid - 1;
else if (cond > 0)
low = mid + 1;
else
return mid;
}
return 0;
}